初级生产量 primary production(26) primary pr oductivity(9)   primary production      Annual fine-root net primary production(NPP)was 20～1317 g·m~(-2)·a~(-1),amounting to 3%～84% of total stand NPP,mostly 10%～60%;      细根年净生产量20～1317g·m~(-2)·a~(-1),占林分总净初级生产量的3%～84%,大部分在10%～60 %; 短句来源      From weaning to the 130th day, 24.24kg net primary production ( green peed 22.24kg,concentrated peed 2kg ) in total were cosumed.      每只兔从断奶至130天共消耗净初级生产量为24.24kg(青饲料22.24,精料2)。 短句来源      the underground primary production in May, June, August, September are 50.25, 60.40, 66.67, 149.59 g/m 2 respectively.      地下初级生产量5，6，8，9月份分别是50．25，60．40，66．67，149．59g／m2。 短句来源      Annual fine-root net primary production (NPP) was 20～1317 g·m -2·a -1, amounting to 3%～84% of total stand NPP, mostly 10%～60%.      细根年净生产量 2 0～ 1317g·m- 2 ·a- 1 ,占林分总净初级生产量的3%～ 84% ,大部分在 10 %～ 6 0 % ; 短句来源      Gross primary production is 48. 01 cal/m2' d, net primmary production is 11.79cal/m2' d.      毛初级生产量48．01卡／m2·日； 净初级生产量11．79卡／m2·日。 短句来源 更多          primary pr oductivity      The primary productivity was 402.6kg(wet weight) / h·m2·day,and it could provide 1553.4kg/h·m2·yr output of the silver and bighead carp.      浮游植物的初级生产量的均值为402．6kg／hm2·d，每年可提供1553．4kg／hm2的鲢鳙产量。 短句来源      The biomass, Chl a and primary productivity of phytoplankton were highly positive correlate,their values decreased in order of season——spring,summer,autumn and winter,The biomass of phytoplankton in every enclosure was large than that in control's,the values of density,Chl a and primary productivity were not obvious difference among the enclosures,the fence and the control.      生物量、Chl a和初级生产量的值均依春、夏、秋、冬的次序递减 ,围隔中浮游植物生物量明显大于对照区 ,而其数量、Chl a、初级生产量在各区间无明显差异。 短句来源      The result of grazing trial for yaks in two-year mixed sown pasture with perennial grasses (Elymus natans + Puccinellia tenuflora) in the Changjiang and Yellow River source region showed: with the increase of stocking rate, aboveground net primary productivity of the total and different functional groups was in the changing trend of curve with single peak, i.e.S-shaped curve,during growing period;      在江河源区2龄混播禾草草地(垂穗披碱草+星星草)上牦牛放牧试验结果表明: 随着放牧率的增加,在生长期内不同功能群地上净初级生产量和总地上初级生产量均出现了单峰曲线变化,即“S”型变化趋势; 短句来源      The biomass 1～8 years old Hippophae rhamnoides increased rapidly, but that of 8～11 years old increased more slowly. Hippophae rhamnoides older than 11 years could keep reasonable community structure and higher primary productivity by natural thinning.      1～ 8龄生物量增长迅速 ,8～ 11龄生物量增长相对较缓 ,11龄后通过自然稀疏沙棘能维持较合理的群落结构和较高初级生产量 . 短句来源      Biomass, net primary productivity,photosynthetic physiological features,number of CO 2 release and tempture in soil of the natural and degraded ecosystems in the case study area in the Gongga Mountain were studied. Characteristics of ecological function of the different forest ecosystem types in the mountain dark coniferous forest zone in the studied area were revealed, throught the study metioned above.      通过贡嘎山暗针叶林带典型区自然与退化生态系统生物量、净初级生产量、光合生理特征、土壤CO2 排放通量及土壤温度变化等内容的观测研究 ,从一个侧面揭示了研究区山地暗针叶林带不同森林生态系统类型生态功能的现状特征。 短句来源 更多          “初级生产量”译为未确定词的双语例句      The gross oxygen production in water column in eel ponds ranged 3.51-7.90 g O 2/m 2·day and the peak appeared in July to August.      养鳗池塘的初级生产量为 3.5 1～ 7.90gO2 /m2 ·day ,高峰通常出现在 7～ 8月。 短句来源      r,F. s and B.f were 3.6,3.0 and 1.5 tons per hectare respectively.      根据地上部分生物量统计,拐棍竹年均净初级生产量为3.6 t/ha,糙花箭竹为3.0 t/ha,冷箭竹为1.5 t/ha. 短句来源      This experiment was carried out at Wuqi,Ansai and Guyuan county on the semiaridregion of the Loess Plateau from 1986 to 1997. Transpiration, net aboveground primaryproduction, soil moisture and characteristic of water physiology ecology and morphology anatomyof seabuckthorn were observed and studied.      1986～1997年在半干旱黄土区的陕西吴旗、安塞县和宁夏固原县，对沙棘进行了蒸腾、净初级生产量、土壤水分等生理生态和形态解剖学特性研究。 短句来源      Biomasses of light,middle and heavy degraded ecosystems are 267.01,121.80 and 0.51t/hm 2 respectively, and net primary productivities are 8.86,5.64 and 0.34 t/hm 2·a -1 . Photo_saturation point,net photosynthetic rate and transpiration rate of the constructive species of the degraded ecosystems are much higher than that of the constructive specie of the natural ecosystem, but water utilization rate is very low.      轻度、中度和重度退化生态系统生物量分别为 36 7 0 1、12 1 80和 0 .5 1t hm2 ,净初级生产量分别为 9 86、5 6 4和0 35t hm2 ·a- 1 ; 退化生态系统建群种光饱和点、净光合速率及蒸腾速率均比自然生态系统建群种高 ,而水分利用效率则相应较低。 短句来源      Bacterioplankton’s abundance has correlation with Chlorophyll-a and this relation is very high in autumn, and research show that the range bacterial biomass is 0.355% ~ 56.25% in phytoplankton biomass.      浮游细菌总数与叶绿素之间存在一定的相关关系,且平水期时它们的相关性高度显著; 浮游细菌的生物量占浮游植物初级生产量的0.355%～56.25%。 短句来源 更多        查询“初级生产量”译词为用户自定义的双语例句     我想查看译文中含有：的双语例句 为了更好的帮助您理解掌握查询词或其译词在地道英语中的实际用法，我们为您准备了出自英文原文的大量英语例句，供您参考。   primary production The results showed that the number of species in the communities of aquatic organisms and in ecosystems depends on the area and volume of the water body and the level of plankton primary production. 例句来源       The greatest number of heterotrophic species was observed in water bodies whose primary production approached 1400 kcal/m2 per year. 例句来源       Modeling the Values of Net Primary Production for the Zonal Vegetation of European Russia 例句来源       Several modern approaches to the problem of estimating the net primary production of terrestrial ecosystems are discussed. 例句来源       The model estimations of net primary production are compared with experimental data. 例句来源       更多                    Summarizing the data of phytoplankton surveys made in 1956-57, 1062-63 and1973-75 in Lake Dong Hu, Wuhan, Hubei Province, the authors discuss the mainecological changes for the past two decades in phytoplankton association (abundanceand species composition, their annual and seasonal variations, diversity index andprimary production) at two sampling stations, which are representative of two differentregions, i.e., the pelagial zone and a bay region. Average annual abundance of plank-tonic algae was increased...             本文根据1956—1957、1962—1963和1973—1975年在湖北省武汉市东湖进行的三次调查资料,总结了过去二十年内在东湖两个代表性采样站上浮游植物群落生态学的主要变化(包括数量、种类组成、优势种类、多样性指数和初级生产力)。年平均总数在二十年内由每毫升几百个增为几千个。由甲藻和硅藻占优势逐步转变为以绿藻和蓝藻占优势,蓝藻中的大型种类明显增加。年数量变动曲线原来呈春季和秋季两个高峰,但60年代后,已变为夏、秋季的一个蓝藻高峰,而且数量大,延续时间长。浮游植物的年初级生产量和日最高初级生产量也有明显增加。作者以浮游植物群落的生态学变化作为主要指标,结合其他因素,对东湖的富营养化过程进行了生物学评价。并从环境保护角度,根据浅水湖泊在利用上的特点,提出了关于防治东湖这样一个多用途(供水、游览、渔业)的水体的富营养化的一些设想和建议。 文摘来源          This is a report of an annual observation and measurement of aqua-physical and aqua-chemical nature,hydrobios and the productivity of the phytoplankton on San Daun.The results are as follows. 1.Range of the aqua-chemical index variation: Amount of dissolved oxygen 4012-9.78mg/l Total amount of N 2.40-7.20mg/l Total amount of P 0.60-0.30mg/l Ratio of N:P 3.92 Amount of silicate 4.55-20.15mg/l Alkalinity 1.06-2.65 gram equivalent/l Hardress 0.70-2.53 gram equivalent/l 2.Monthly mean distribution density of ph...             本文对江西省泰和县伞塘的水物理、水化学、水生生物和浮游植物的初级生产力作了周年性的观察测定,其结果如下:1)水化学指标周年变动范围:溶解氧含量为4.12—9.78毫克/升,总氮含量在2.40—7.20毫克/升,总磷含量在0.06—0.30毫克/升,N/P 比值为39.2,硅酸盐含量为4.55—20.15毫克,总铁含量为0.14—0.60毫克/升,碱度为1.06—2.65毫克当量/升,硬度为0.70—2.53毫克当量/升。2)伞塘中的浮游植物的月平均分布密度为929万个/升,生物量为22.4毫克/升;浮游动物的种类有93种,种类分布有明显的季节性。伞塘中底栖动物种类不多,但数量较大,软体动物生物量达57公斤/亩。3)伞塘浮游植物的初级生产量为845.4克氧/米~2,浮游植物对太阳能的利用率只有0.28%。 文摘来源          This paper reports the results of the investigation on physics, chemistry, plankton, bacterplankton, benthos, growth of fishes and primary productivity etc. of Qinghe reservoir from 1982 to 1985. It also discusses the change of water quality that affects fishery.The utilization rate of the total radiation in growth season by phytoplankton was 0.22%. The utilization rate of the primary production in growth season by fishes was 0.61%. The P/B value of phytoplankton in growth season was 81.In recent years, the...             本文报道了1982至1985年对清河水库的水文、浮游生物、浮游细菌、底栖动物、鱼类生长和初级生产力等方面的调查结果。并对十几年来的水质变化对渔业影响等问题进行了分析讨论。 近些年该水库鱼类对生长季节的初级生产量的利用率为O.61％。由于近些年水位较低,影响了水质使得水库的鱼载力较七十年代初、中期有所下降。 文摘来源   << 更多相关文摘         相关查询: 毛初级生产量 净初级生产量 初级 地上净初级生产量 生产量 计划生产量 初级样品 生产量预测 初级马球 初级合作社 初级原料 初级运动员  对查询结果不满意

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